Earlier quoted context omitted.
For every puri.sm I'd wager there is a SilentCircle. https://news.ycombinator.com/item?id=12047219
How is this different than any other industry? Most start-ups fail, security industry or otherwise.
puri.sm may yet execute well and take-off but privacy remains a seriously hard problem to tackle (due to govt, ad-net, big-tech) yet easily a problem to get passionate about.